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We present a new approach to path integral Monte Carlo (PIMC) simulations based on the worm algorithm, originally developed for lattice models and extended here to continuous-space many-body systems. ...
A detailed description is provided of a new worm algorithm, enabling the accurate computation of thermodynamic properties of quantum many-body systems in continuous space, at finite temperature. The a...
We investigate the thermodynamic properties of a dilute Bose gas in a correlated random potential using exact path integral Monte Carlo methods. The study is carried out in continuous space and disord...
It is shown how the time-dependent Schr\"{o}dinger equation may be simply derived from the dynamical postulate of Feynman's path integral formulation of quantum mechanics and the Hamilton-Jacobi equat...
Abstract: In the framework of path integral the evolution operator kernel for the Merton-Garman Hamiltonian is constructed. Based on this kernel option formula is obtained, which generalizes the well-...
Vector Schwinger model is reinvestigated with the mass like term for gauge field. Phase space structure has been determined in this situation. It has been found that mass of the gauge boson acquires ...
A rigorous proof is given on the equivalence of the O(3) nonlinear sigma model and the CP1 model via path integral approach.
Starting from the canonical formalism of relativistic (timeless) quantum mechanics, the formulation of timeless path integral is rigorously derived. The transition amplitude is reformulated as the sum...
The Lagrangian of a system describing the dynamical behaviour of a time-dependent harmonic oscillator is modified and then used to evaluate the Feynman path integral of the oscillator. The path integr...
2006Vol.45No.5pp.813-814DOI: A Note on Calculation of Phase Space Path Integral by Means of Invariants QIAN Shang-Wu1 and GU Zhi-Yu2 1 Physics Department, Peking Univers...
2006Vol.45No.2pp.259-261DOI: Phase Space Path Integral Method for Problem of Obtaining Propagator of a Particle with a Force Quadratic in Velocity GU Zhi-Yu,1 HUANG Bo-Wen,1 and...
2005Vol.43No.6pp.998-1002DOI: Path Integral Formalism for Nondegenerate Parametric Amplifiers in Entangled State Representation FAN Hong-Yi,1,2 LI Chao,3 LIU Qiu-Yu,4 and Alfred W...
2005Vol.43No.4pp.641-656DOI: Correct Path-Integral Formulation of Quantum Thermal Field Theory in Coherent State Representation SU Jun-Chen and ZHENG Fu-Hou Center for ...
The Hamilton-Jacobi formalism is used to discuss the path integral quantization of a spinning superparticle model. The equations of motion are obtained as total differential equations in many variable...
The overcompleteness of the coherent states basis leads to a multiplicity of representations of Feynman’s path integral. These different representations, although equivalent quantum mechanically, lead...

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